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J. B. ARCHER?. APPARATUS POR THE MANUPAGTURE 0F GAS.

No. 433,926. y A Patentd 'Aug/5', 1890.

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APPARATUSVFOR THE MANUPAGTURB 'of' GAS: No. 433,925 Patented Aug. 5,1890.

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.Y ."LTflafARCHER.V APABATUS PORTER MAN-UPAGTURB 0F GAS. No. 433.926. A'Patented Aug. 5, 1890.

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BM-:CEEA APPARATUS POR THE MANUPAGIURB 0F GASr No. 433,926. 'PatentedAug. 5e 1890(l .'B. ARCH THE MANU (No Mode1.\

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x. L ARCHER. l APP,4\. RTUs POR THB MANUPAGTURE 0F GAS.

No. 433.9261?, Patented Aug. 5, 1890.

GSheets-Sheet 6. n

by the aid of certain new and useful devices andclaimed. I. .3o

section through the ends of one setof horithrough one ofthe injectors.`Fig.6 isa .ver-

l' ventedcertain new and us'efnllmprovemenis 'My invention relatesto'the manufacture of gas according to that class of processes in ywhichthe iiiterdeeomposition of oil and Wa-v y' ducts vin a measure res-ultfrom the finteraction of steam and carbon; and my invention that maybeused in' Jfurnaces for forging,

similar letters ref er to ksimilar' parts th rough` out the 4severalviews thereof, Figure lis a Nifrnn ,ftSfTsrns PATENT Fries,

.I'oIIN B. Ancnnao'r WASHINGTON, DISTRICT ori-COLUMBIA- i ygApSPARATu-sf FoR THE MANur-'Ae srEcIrIcATIoN forming pm of manquaientNo. @accederse August 5,1890. l Application tiled November y2, 1889..`

Bel itignown that. LJQ'HNJBARCiIERV, a citizen ofthe United States,residing at Washington,-'in the District of Columbia, have in# inApparatusfor the Manufactureof Gas;

art `to which itappertainsto makeand use ter is effected, and inWhichthe gaseous pro- .consists in an improved appz'n-atusfor ytheeconomical'manufacture of,- gas by converting,- in a gradual'manner,steam orvapor ,of water'aud` hydrocarbon oil into aY fuel-gas Welding,Crucible steel-melting, and 'other metallurgicalprocesses, burningbrick, pottery, tile, lime, cement, 6:0., and forring boilers,the'couversion being accomplished andcomhinations--to be hereinafterdescribed In the accompanying drawings-,in which perspective view-of thegas-producerembodying myimprovements.- Fig. 2 is an elevation of `oneside of the same, showing pipefconnections,-&c. Fig. 3 is a verticallongitudinal zontal retorts, showing the return-boxes, in jectors,v&c.Fig. 4 is a plan viewot the-producer, showing pipe-connections,ycut-fonts', 85e. i Fig. 5 isa longitudinal cent-ral sectionl tical'section ofthe producer, o-n'line w c: of Fig. 4.. Fig. 7 is a combinedplan 'at the grate-bars and sectional plan through the tlues of theproducer, showin'gthe grate and flue arrangements." Fig. Sis a vert-icalsec.- tion of the -@nl-heater, showing its double'coil. Fi g. J is 'anelevation of a different side of the producer fromthat showninFig. 2.

The upper portion of theinterior otthe brick-work' furnace structure Zis divided wall A.

TURE OF GAS.`

serial no. 329,034. INU man.)

into tivo compartments the inner-and' outer onesby thea-nnular Wall A,iuclosing the coil of'pipe A, the top of the wall being considerablybelow' the under surface ot' lche relmovable tilesn .the 'outer edgesofwhich `rest. uponthe brickrvvork furnace structure 'audf the inner edgesupon va d ange (Z ot" the removablecap-piece DZof the vertical'retort.'In two opposite lsides'of the outer compart; ment et the'briek-Workstruct-ure are placed the horizontal retorts' B B, in gangs of three,'

andin tivo remaining oppositesides ot' the Same compartmentv areIsimilarlysplaced the superheaterpipes R R,alsoin gangs of three,

the said 'outer compartment communicating with the'inuer one', in--whichare placed the inner coiled superheat-iIig-pipey C andthe- Verticalretort/D by means-ofi the openingbetween'thet'op of theannular wall A9andthe under surfaces of4 the tileso?. In the middle of the bettelnotthe central recess which is..

formed in the brick-Werl: structure and which extends to the top thereofis the tubular snpport E, upon which--rests the rotor-eD. The protectorsE E', surrounding the lowerlpart of the retort D,arc ofsteel,cast-iron,`orother refractory material, and are made In two ormore pieces. in order that they may here movedI as'otten as desired.'lhey'serve t0.'V

the direct action ot the fire.'

protect.the .lo\ver portion ot the retortfroln l The grate-bars,(Jr aresupported at theiiw .several piceesall ali'kejand segmental in form,which, when united, form an annular D. (Se'eFig. 7.)

ure'surrounding'the'.grate is nearly cylindrical, it having a slightinwardpitch asin rises fromthe grate-surface, forming an annulartire-back, and n ponit rests the annular is provided with two lateralopenings G and G2, which are respectively' closed by doors, as

Theinner surface of the brickworkstruct;

riding-thecentral retort The ltire-box thus formed, which.

opens upwardly intothe inner compartment, roo

shown,'wl1ile a corresponding opening G3,-

provided with a similar door, communicate-S Q t l @aegee with theash-pit. The Haine and products of combustion from thc lire en their wayup the central recess and inner compartment heat the vertical retort l)and inner coil C, the i lower turns of which are surrounded bya ring ofiron or steel c cast thereon to protect them from the extreme hea-t andwhich rests upon lugs c', formed upon the inner surface otn the annularwall A. After passing through the ro inner compartment the heatedproducts of combustion are deflected by th(` tiles fr?, and, passingbetween them and the annular wall A, descend through the outercompartment to the downtake-ues c3 ci, and thence to the main flues, andso to the stack.

'l`he'downtake-flues a3 are six in number, the upper ends of four ofwhich open into the corners of the bottom of the outer compartment, theremaining two opening into the zo centers of the opposite sides of thesame compartments under the horizontal retorts B l5, the lowerends ofthe downtake-tlues opening Ainto two parallel horizontal flues Vor a* inthe foundation of the brick-work structure. These z5 are connected attheir central points by a cross-flue a5, which opens into the main fluea, leading to the stack, in which main flue is placed a damper of, bywhich the draft is regu-lated.

'lhe'pipe l is' connected with a suitable st'ealn-sul'ijjily, and thesteam is led thereby to the vertical pipe I, by which it is led to 'thesuperheater-pipes R R, those upon the I different sides of the outercompartment being connected by the pipe P5?. "lhence it is conducted bythe pipe P3 to thcupper end of the coil A, passing therethrough andemerging by the pipe. P4, which it ascends. The pipe l", as is also thepipe P3, is protected from 4o extreme heat by the 'projection as, formedupon the side of the wall A'J and extending above the top thereof to thelevel of the up' per surface ofthe tiles a?. From the upper end of thepipe P4 the steam is conducted by the pipe P5 through `theregulating-valve V to the upper end of the inner super eatingcoil C,where it is highly heated, and from the lower turns of which it is ledby the pipe Y -P6 to the Y-piece Y, where it divides, passing throughthe branch pipes P7 to the injectors J J, the construction of which isshown in Fig. 5.

As the steam passes into theinjector and through the nozzlej, avacuum isformed in the chamber jz, which draws in oil through the oricc ja, from'which a pipe extends to the oil forcing and heating apparatus, and themixed oil and vapor or steam pass together through the exit to thehorizontal retorts 1313,0f 6o which there are by preference three oneach side, connected in a continuous series, and in which the oil whichhas been already heated and at-omized --by the steam is thoroughlylvaporized. The oil that meets the steam in the injectors J 'J is firstheated, and for this purpose the oil-'heater Il is used. This consistsel a cylindrical receptacle, which is supbottom of the vertical retortD.

plied with superheated steam by the pipe h leading from the pipe PG. Theclosed cylinder H contains a double spiral coil ll', one end of which isattached-to the vforcing apparatusor pump L by the pipe h2, while itsother endisconnected to thepipe h3, havingbranches h4 h4, by which theoil is led to the injectors. The oil being thus heated in the coils H bythe steam contained in the cylinder H, the relative amounts ot oil andsteam admitted to the vaporiZing-pipes B B are regulated by the valves VV in the pipes PTP?. and the valves V2 V2 in the branch pipesv h4 71,4,respectively. The gaseous mixtures resulting from the interaction of thesteam and oil after leaving the horizontal retorts B B (where the carbonof the oil seizes upon the oxygen of thel steam, liberating thehydrogen,) is conducted by 'the pipes P5 P8 to the Y-piece Y', which isjoined to the pipe P, leading to the Here, by virtue of the hightemperature the gaseous mixture is subjected to, it becomes ,a perfectedfuel-gas. It then leaves the retort through the eduction-pipes P10,whence it may be conducted to any desired point by means of sup#ply-mains. The gas thus formed is essentially a fuel-gas. Vhen the gasis to be used for illuminating purposes, itis put through a furtherprocess, which i's described in application Serial No. 326,852, tiled byme October l2, 1889.

In the pipe P9, at its lowest point before it tu/rns to pass' inwardthrough the brick-work structure to thel retort D, l place a cross p2,into the outer extremity of which is screwed a lu r J3 which ma beremoved and so allow of the introduction of a tool into thehorizontalportion of the pipe P9, to remove any sediment that may accumulatethere, while at the lower extremity of the cross I place a val ve V3,which when opened serves as a blow-off to ridth'e rctortD ot' tar,pitch, or nonvolatilizable matter.

It has been found that the retort-protectors E burn most' rapidly at.about the center, where the gases ot` t-he combustion ot' the fuel upon-the grate come in contact with the upper air,

and to avoid this l make t-h'em much thicker at this point, as shown inFig. 6, the extra thickness taking the form of a ridge e? runningentirely around them about one-third to one-half of their height fromthetop.

The coil Cis preferably constructed as follows: An ordinary extra-heavyiron or steel pipe, about thirty-six millimeters in diameter, or more,if desired, is-'formed into a close coil of the desired diameter, theupperen'l thereof being bent upward to connect with the pipe P5, whileits lower end is also bent upward, connecting with the pipe P. The coilbeing placed 'in asuit-able mold, its three or more lowest turns arecovered with iron or steel, which protects them from the direct actionofA the heat, while the upper or more remote parts of the coil receivesthe full benefit ot' contact. with the hot gases. Extending from thepipe P to the pipe P3 is a cut-out IOO ilo

IIS

pipe P18, provided'with a valve V4, by open- A ing which and closing thevalves V5 and'V,5 in the pipes ls and P', respectively, the steam ismade to pass directly from pipe 1P tc the pipe l and out-er coil A,avoidingthe superheater-pipes R R, -which are thereby cu-t ont.Extending from the pi-pe PG-to the'pipe P4 is a cut-out pipe P11,provided with a valve V7, y

byopening which and' closing the valves-V. andl V8, the latter -beinginthe pipe Pf3-'the steam is made to pass directly` from the'outeri thusavoidingtlie inner coil C,Whichfis`the-rebyc'ut out. @Extendingfrinlthe' pipc'P to' the pipe ISis the cut-out pipe'Pm,providedl haththe valves Vu and V10,'by opening which and closing the -valves V VandlV11V11, the

latter 4in the branch pipeA PB-thesteam is.

made to pass from the inner su'perheatingl coil C through the pipes PP12 PSP'diTeOtly 'thereby cut out. e tends a pipe 717, that enters.thec'u-t-hutpipe` lhis pipe is vprovided. with avalve V14, 'and servosto supply oil to the' pipe' P12l .to the retort I), zwoidingthe'vapori`zer-pipes B l5, whichare thereby cut out. Extend-ing from thepipe h2 to thepipe h? is 4aient-mit-A pipe 7i, provided with ,a valveV12, -loy opens` ing which and closing theyalves VWX/'13 in the pipes h2and 7l. the oil iS conducted from the pump directly to the pipe h3 andinjectors J and J, avoiding the oil-heater, which is From the pipehsfth'ere exthrough the injector hs, located at theirjunction when theinjectors J J are cut'out. :These various cut-outs serve to guardagainstthe -failing of anyof the parts of this producer from the extremehigh temperature at whichVA it is necessarily run, or from other causesnot necessary to mention, and' bytheir presence the probability ofdelays oraccidents that Would compel a shutdown is reduced tloa minimum.From the pipe B11'to the upper Y portion of the vertical retort Dthere'extends 1 aliquot pai-tol' the-entire 'openingintheV 'valve V.

a pipe' P13,-provided with a valvelV, by open-l ing which superheatedvsteam from the inner superheater-coil-C may be introduced into theretort D. 'llie regulating-valve V ing the outer coil A andthe innersuperheater-col C, and serves'to regulate the.:

amount of steam admitted; to the' coil C, and

through. it to the producer; It isopened and. v closed by a lever K. Itsposition is indicatedby the pointer iK', movingon the@graduated` are K2,each" divisipnzof'which represents an The cil is supplied to the pumpLthrough the suction-pipo .IA and passes thence to :the oil-heaterthrough the pipe h2, the excess be- Y ingretur'ned to theftank by theoveroW-pipe t .v 'Z\,.fl1`ig."1. A gage K? servesl to indicate thecil-pressure in'thepipeh?, and gages K11 K12 indicating thegas andvsteam pressures, respectively. The admission of. the-oil ,to theproducer. is regulated by the hair-valve K4,

which ecnsists of aspecially-designed plug:

A is a conical plug valve, and is placedwitlnn th-e' pipe connect-Avalve having a'rcctangular slit, through-Which vvcated bya pointer@traveling on a graduated Thedhorizontal retorts B 'B are provided withreturnboXes-B"f l. These consist voi' a rectangular box, into theback ofwhich the horizontal.-retorts.scre\v,'and which are lat-A .erallyinclosed in the brick Walls ofthepro- .by plates B2, eachplate'beingopposite to the .boltsor other `suitable viastenings, and; theA doorsbeing-remo v able, .fastened to the-frame by bolts or otherwise. 1.

vaccess may be had tothe interior ofthe hori zontal retorts-B.` y

. The producer is provided withfcc'n'ner-irons 'llhewall andothermaso'nry arefprefembly forspecial purposes, of iron. or steelplates,

prod ncerf isk run.

v In thepresentfapplication I donut-desire to claim the process ofmanufacturing gas disclosed-herein ;v but I makcsuchprocess the subjectof another application filed by me No- .Having thus described myinvention', what ticalretort above the center of the said gratel andextending-to the top lof the generator, al coil of pipe-.around theupperportionof said retort and above the Iire-boX, an annularfirefire'bo:,:an annular wall above said' annular fire-back e `tendingnearly'to the top of the thebodyof the said annular Wall,'a square ofsaid. annular wall, horizontal retorts `eirtending through .the spacebetween said an- .clearing said annular-Wall andjleaving a flue outerand annular Walls, having fines extendsage below the said gen erator forthe products of combustion connected with thesaid lines, as and for thepurposes described.

`2. In' a vgas-generator, an annular {ire-box provided writh'a grate andan ash-pit, a vcras maybe also. the inner fines; while'"the pipe`connectionsJ- fitti-ng, and valves are o f iron, in order-'to withstandvthe high heat at. which the;

back surrounding the lower part of the saidl nulara-nd said outer Walls,a covering forthe gencrater-extendin'g fromthe said outer Wall v tothetop ofthe central lvertical retort, but

the o l-passesfthe opening v,in which is'indi- 4 arc 7c. Steamisjsupplied to the pump by the pipe P15, and .theexhaust-steam isremoved By.v removing' the doors i3? and .plates B2 'i I Kand tie-rods'KG to.hold it firmly together.

constructed of'ffire-brick, or the outer wall,`

too

vemher'2,l 889, and serially numbered 329,035.

, I claim,`a nd desire tozseeure by Letters Patj 1'; In a gas-generator,an 'annular fire-box provided with al grate and ,an ash-pit, a vel-, f

IIO

generator, anouter coiled pipe inclosed yWithin outer- Wall. or casingfor thegenerator outside-14 above the same, a wallof masonry below saidling downwardth'erethrongh `from the space l betvveenthe saidjvalls, andan.eductionpas T IS A coil of pipe around the upper portion of saidretort and above the rebox,`an annular reback surrounding the lower partof the firebox, an annular wall above said annular iireback extendingnearly to the top of the generaior,v an outer vcoiled pipe inclosedwithin the body of the lsaid annular wall, a square outer wall or casingfor the generatoroutside of said annular-wall, horizontal retortsextending through the space between said annular and 'said outer walls,a covering for the generator extending from the said outer wall to the'top of the central vertical retort, but clearing said annular walt andleaving a Ilue above the sameLlwall of mason ry below said outer andannular walls having ues exlendin g downward theret-hrough from thespace between the said walls, a passage below the said generatorconnected with the saidflues and serving as an eduction-passage for theproduets'ot` combustion, a steamsupply pipe connected 'with the saidouter coiled pipe, and pipes connecting the outer and inner coils andthe horizontal and the vertical retorts together, as and for thepurposes described.

3. In a gas-generator, au annular tire-box provided with a grate and anaslrpit, a vertical retort above the center of the said grate vandextending to the top ot' the generator, a '-,proteetivemetal casingaround the base of Athe vertical retort, a coil of pipe around the upperportion of said retort and above the fire-box, an annular fire-backsurrounding the lower part ot' the said fire-box, an annular wall aboves aid annular fire-.back extending nearly to the top of the generator,an outer coiled pipeinelosed within the body of the said annular wall, asquare outer wall or casing for the generator outside of said annularwall, horizontal retorts extendingthrough the space between said annularand said outer walls, a covering for th'e generator extending from thesaid outer wall tothe top of the central vertical retort, but clearingsaid annular.

wall and leaving a tlue above the same, a wall lof masonry below saidouter and annular' walls havingfiues extending downward therethroughfrom the space between the said walls, a passage below the saidgenerator connected with the said lues and serving as an:ednotion-passage for the produets'of combustion, a steam-supply pipeconnected with the said outer coiled pipe, and pipes connecting theouter and inner coils andv the horizontal and vertical retorts together,as' and for the purposes described. i Y 4. In a gas-generator,anannulanrebox provided with a grate and an ash-pit, a vertical retortabove the center of the said grate and extending to the top of thegenerator, a protective metal casing around the base of the verticalretort, a coil of pipe around the upper portion of said retort and abovethe lire-box, having its lower turns covered by a protective easing, anannular tire-'back surrounding the lower part of the said iire-box, anannular wall above said annular lire-back extending nearly tothe top ofthe generator,

of the said annular'wall, asquare outer-.wall or casing for thegenerator outside of said annular wall, horizontal retorts extendingthrough the space between said annular and said outer walls, a coveringtor the generator extending from the said outer walls to the top of thecentral vertical retort, but clearing said annular wall and leavingaflue above the same, a wall ot masonry below said outer and annularwalls having iiues extending downward therethrough from the spacebetween the said walls, a passage below the said generator connectedwith the said dues and serving as an eduction-passage for thc productsof combustion, a steam-su pply pipe connected with the said outer coiledpipe, and pipes counecting the outer and inner coils andthe horizontaland vertical retorts together, as and for the purposes described.

5. In a gas-generator, au annular fire-box provided with a grate and .anash-pit, a vertical retort above the center of the said grate andextending to the top of the generator, a coil of pipe around the upperportion of said retort and above the fire-box, an annular firebaeksurrounding the lower part of the said ire-box an annular wall abovesaid annular tire-back extending nearly to the top of the generator, anouter coiled pipe inclosed within the body of the saidaunular wall, asquare outerwall or casing for the vgenerator outside of said annularwall, horizontal retorts cxtending through the space between saidannular and said outer walls, a removable cap for the vertical retorthaving a flange thereon, removable tiles forming a. eo\f'ering for thegenerator, the outer ends ot' which rest upon the outer wall and theirinner edges upon the flange of the removable cap, a

steam-supply pipe connected with the saidv lire-back extending nearly tothe top of thel generator, an outer coiled pipe iuclosed within the bodyof the -said annular wall, a square outer wall or casin g for thegenerator outside of said annular wall,"horizontal retorts extendingthrough the space between said annular and said outer walls,vaporizing-pipes horizontally plaeed'in the space between the annularand outer walls and upon opposite sides thereof, a steam-supply pipeconnected `an outer coiled pipe inclosed' within the body ICO IIO

Zinio together, as and for the purposes described.

In a gas-generator, an annular `fire-boxv provided with a grate and anash-pit, a vertical retort' 'above the center ofthe said. grate andAeXtendingto the top of the generatona tu- .bu-larnsii'pport upon whichthe retort .and

:per portion of said retortand-abovc the tirepongan annular ire-backsurrounding the lower part of the Said [ire-box, an annular wall abovesaid 'annular lire-back extending said annular wall, a square outer wallor cas- Aingl for `the generator outside 'otsaid annular 'wall,horizontal retorts 'extending' through the space between said annularand'said outer walls, a covering for the generator extending from thesaid outer wall to the top of the central vertical retort, but clearingsaid langratefbars'rest, a coil of pipeA around the iipnearly'tothetopof the generator, an outer coiledpipeinclosed within the body et theynulai' wall Vand leaving a tlue above the samc,`

a wall'of masonry below said louter andaunui-ar walls, havin g finesextending downward therethrough from the space between .the said walls,a passage `below the said, generator connected witlrthe said fines andserving asv aneductfiofirpassage for the products of coin-4 .bustion,asteaii'isiipply pipe connected with the said outer. coiled pipe, andpipes connectv ingthe enterand vinner coils, and the horizon` tal andvertica-lretorts together, as and for the purposes described.

1 provided with-.a grate and an' ash-pit, a ver- 'tical retort. abovethe center. of the said grate vand extending to the top' of thegenerator, a tubular support u pon which the retort and grate-barsrl/esnprotectors surrounding the back*surrounding the lower .part of thesaid I lower part of the `retort and. constructed of S. In agas-generator, an annularl lire-box' retort and above the ire-box, anannular re fire-box, an annular-wall above said annular" A fire-`backextending .nearly to. the top, of vthe in the body of. the said annularwall, a square Ueiieratoig an outer coiled; i. e inclosed with! i a Pouter wall oj-r easing forth'e generator `outside f of said 'annu-larwall, liori'zontalretorts ex-- l tending through the'space between saidauf;

ierator extending from thesaidou tenwall 1,: the to'p ot the centralvertical retort, but '.cleariii'g said annular wall and leaving a fluef. above the saine, awall of masonry below said outer andaiiiiiilaiwalls having fines extend# Aiiigdownwa'rdtherethrough from thespace .between the said walls, av passage below the said generatorconnected witlrthesaid flucs and serving as an ediictionfpassage' forthe products ot' combustion, a steam-supply pipe connected with" thesaid outercoiled pipe, and pi-pesconnecting the outer and inner coilsand nular and said outer walls, a covering fortlief leading freni thehorizontal retornasiand for as and for the purposes described. v9.111, agas-generator, the combination ot a oeitical retort, a tubularsupport'for the 7o vertical retortarranged below the center of the'vertical retort, a ring resting en the saidtubulaiasupport,` a series.of gratefbars,

vlieinneredges ot' which rest-upon said ring, a vapor-induction pipe andgas-.eduetion pipe, each" con ii ect-ed with the vertical retort, meansfor, supplying oil and water vapors to said vz'tpor-indiiction pipe, anda series of protecting-tiles airaiiged Vabout tlieibase .of the retortand su p ported by vthe tubular support, as and for the-purposesdescribed.`

l0. AIn agasgcneraton the combination of a'biicl -woi-k furnacestructure, an uprightv annular wall, ya vertical-retort:withinthe spaceembraced by the annular wall, atubu'- 85 lar support for .the verticalretort arranged below the center of the" retort, a ring resting on thesaid tubular's upportga Series of gratejv-v bars, the inner edges ot'which rest upon the said ring,` a.vapor-induction pipe antigase'diictionpipe, each eonneetedgwi-tli' the ver# l tical retort, means forsnpplyiiigoil and Water vapoisto said' vapor-'induction pipe, andaseries of vprotectiiigtiles arranged about the .baseot' the retoitandsupported bythe tubu-l 95 lar support, as and for the'piirpos'esdescribed.

ll. In a gas-gcnerator, tliecombination of horizontal vaporiziiigfpipes'communicating with". each other,asteainfsupplyf pipe leading thereto, averticalretort, a tubular support ioo for the vertical retort,arrangedbelow the een ter of the vertical retort, a' ring resting onthe...

saidtiibnlar support. a series of gratelbars,

'tectingltiles arranged aboutthe base 'of thel retortand supported bythe tubularsupport,` -i-io as and torthepurposes described.

12. Ina gaslgencrato'r,*the combinalionof a [ire-box,horizontalstcani-siiperlieaters fon-, sistjiiig of chambers cominunjcati'iig witheach otl1er,'asteainsiipply pipe leadingto tl'iesaid 115 siiperheaters, an outer coil o t' pipe arranged `'above the fire-box,an inner 'spiral superheating-coil, also above the tire-box, ahorizontal` t retort, an oil-induction pipeconnected.withl v the'saidretort, and pipeseonnectingthe siipe'rhcaters with the o ute'rcoil, tlie.oi`ite`r Icoil with the inner coil, aiidfth'c inner coil'witli the.horizontal retortai`iil an eductioii-pipe the purposesd'cscribed. A

13. In a gasygeiierator, the. combination .of a fireeb'oX, a horizontal-steavm-supcrheater, a v steaiii-sn ppl y pipe leading to saidsirpcrheate'r, an outer coil of pipe arranged above'thetirebox, a pipeconnecting thesaid coil-With the I steam-supply pipe leading` thereto,an outer coil of pipe arranged above the tire-box, a pipe connectinglthe said coil witlrthe superheater, an inner-spiral supcrlicating-coil,also above the lire-box, apipe connecting the outer and inner coils,horizontal retorts, pipes and branch. .pipes connecting the inner spiralsupcrheating-'coils with the horizontal retorts, an oil-heater, pipescon necting the oil-heater with the said-branch pipes, and injectors1ocated at the junction of the two last-named pipes, as and for thepurposes described.

1-5. In a gas-generator, the combination of a fire-box, horizontalsteam-s u perheaters consistingot' chambers communicating with eachother, a steam-supply pipe leadilig'to said superhcater, an outer coilof pipe arranged above the tire-box, a pipe connecting the said coilwith the superheatcr, an inner spiral superheating-coil, also above thelire-box, a pipe connecting the outer and inner coils, horizontalretorts, pipes and branch pipes connecting` the inner spiralsuperheating-coils with the horizontal retorts, an oil-heater, pipesconnecting the oil-heater with the said branch pipe, injectors locatedat the junction of the two last-named pipes, a vertical retort, pipesleading from the horizontal retorts to the top of the vertical retort,and a `sgas-eduetion pipe connected with the vertical retort, as and forthe purposes described.

1G. In a gas-generator, the combination of a vertical retort,vapor-induction and gaseduction pipes connected therewith, a cappieeeupon the said retort, removable tiles, the inner edges of which restupon the outer edges of the cap-piece, and means for supplying oil andWater-Vapor to the induction-pipe, as and for the purposes described. p

"17. The combination of a masonry furnace structure, an upright annularwall dividing the upper portion of the interior of the furnacestructure, an outer spiral coil of pipe contained within the body of thesaid wall,

an inner spiral steam-superheatiug coil andv necting,r the ont-er coilof pipe, the inner spiralV superheater, and the horizontal and verticalretorts together, a graseduction pipe connected with the verticalretort, a steam-snpply pipe connected with thc said outer coil of pipe,au oil-supplyV pipe connected with the horizontalnretort, afire-boxbelow the space inclosed by the annular wall, a chimney, and tlueswithin the furnace structure communieating.,r between the space inelosedby the annular wall and the space outside ol sa'id wall and between thelast-named space and the chimney, as and for the purposes described.

18. In a gas-generator, the combination, with a chamber having avertical retort and a generator of heat contained therein, of a secondchamber having a horizontal retort contained therein, steam and oilsupply pipes connected withthe horizontal retort, a pipe connecting thehorizontall retort with the vertical retort, a gas-eduction pipeconnected with the vertical retort, a flue connecting the two saidchambers together, and an yescapeiue for the products ot combustioncommunieating with the last-named chamber, as described.

19. In a gasgenerator, thc combination, with a chamber having-a verticalretert and a generator of heat-contained therein, of a Second chamberhaving a horizont-al retort contained therein, an injector having steamand oil supply pipes connected therewith communicating with thehorizontal retort, the mouth of the said oil-supply pipe beingsurrounded by the month of the steam-supply pipe, whereby the oil isinjected into the horizontal retort and `ato1nized,a pipe connecting thehorizontal retort with the vertical retort, a line lconnecting` the twosaid chambers. together, and an escape-flue for the productsA ofcombustion communicating; with the lastnamed chamber, as described. j

In' testimony whereof l aftix my signature in presence of two witnesses.l

JOHN l5. ARCHER.

Witnesses: VERNON MARTIN Doa-inv, O. F. KELLER.

IOO

